MMC Drive Interface...

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By Oscar

Guardian (583)

Oscar's picture

21-03-2005, 00:33

Sorry, I have wrote the last message in spanish. There is the english version (broken english):


Usuario_msx2, where can I find the MMC layouts for making the little boards that you use in your projects? I want to make a MMC and write a little review for out magazine (Call MSX)


By roadfighter

Champion (451)

roadfighter's picture

17-04-2005, 11:42


If i want to make only the Flashrom part of the cartridge, will it work ?


By usuario_msx2

Paladin (757)

usuario_msx2's picture

11-10-2005, 20:05


>If i want to make only the Flashrom part of the cartridge, will it work ?
Yes of course,

best regards

By legacy

Hero (570)

legacy's picture

11-10-2005, 20:47

Is there a kind of schema ? These pic's are not very useful to reproduce this nice thingy

By usuario_msx2

Paladin (757)

usuario_msx2's picture

12-10-2005, 09:34

Yes, you must go to page 1(this post) you can see schematic (SCC FlashRom) you need:

Atmel AT29c040A(512kb flash)
2 100k resistors

Best regards

By msx_pc

Rookie (27)

msx_pc's picture

06-02-2006, 10:56 wondering if the mmc drive also working in msx usb gamereader to load some applications as a normal drive.

who can confirm that to me or tried also before?

By sharksym

Resident (36)

sharksym's picture

18-04-2007, 18:22


I have released new MMC/SD Disk Bios v1.64.
If you intrested, please check below file. Smile

Many functions are added and improved.
Please, see history.txt.

MMC/SD Disk Interface Cartridge v1.64 (2004,2007)
By Yeongman Seo (

2007.04.19 v1.64
-Add SymbOS Disk driver routine
-Change Read routine (speed optimized)

2007.03.06 v1.61
-Fix Format-Routine Bug

2007.03.04 v1.60
-Add Drive C: for System-Disk only
-Add DiskMan.exe for Windows

2007.02.13 v1.50
-Fix to allocate more than 256 Blocks.

2007.02.09 v1.50
-Add SHIFT Key force to Boot directly.
(Koei games runs with CTRL+SHIFT Key)

2007.02.08 v1.40
-Change Base DiskROM
-Fix Slot Select Bug

2007.01.08 v1.20
-Add Flashrom Disk for DOS1
(MMCDISK1.ROM for DOS1 system
MMCDISK2.ROM for DOS2 system)
-System Disk can be settup upto 23.0MB disk
*.dsk file can be copied to MMC/SD block
You may enjoy it without additional FDD
-Some Bug fixed at
-INIT_MMC.COM & XCHG_MMC.COM are renamed
-Chage Disk access routine for faster speed in DOS2
-[STOP] Key can be used for Multi-Disk changing.

2004.10.26 v1.10
-Support Disk 7 Type
-Support Multi-DIsk of 9disks
-Add [View MMC Area] Menu
-Add [INIT_MMC.COM] for Install
-Add & Change Schematic for faster speed
-Change Install.bat, Autoexec.bat
-Change Multi-Disk changer
-Fix ROM-Disk Size (480KB)

2004.09.14 v1.00
-First Release
-Support 2DD(720KB) only
-XCHG_MMC.COM : MMC Exchanger
-DISKMAN.COM : MMC Disk Manager
-ATLOAD.COM : Flash Downloader

By sharksym

Resident (36)

sharksym's picture

18-04-2007, 18:53

SymbOS is running on MSXturboR with MMC/SD Drive. Big smile

By cax

Prophet (3740)

cax's picture

19-04-2007, 15:48

Cool ! Would be nice if somebody will produce such a device from the customer's cartridge.
My soldering skills are not good enough to build it.

By jltursan

Prophet (2619)

jltursan's picture

19-04-2007, 16:28

I'm not either good at soldering Tongue. Would it be possible for someone to get the responsability to build this hardware?. If I'm not wrong, it's the first "alien" hardware to be supported under SymbOS providing its own driver Smile

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